\Header{grid.rect}{Draw a rectangle in a Grid Viewport}
\keyword{dplot}{grid.rect}
\begin{Description}\relax
This function draws a rectangle.\end{Description}
\begin{Usage}
\begin{verbatim}
grid.rect(x = unit(0.5, "npc"), y = unit(0.5, "npc"),
      width = unit(1, "npc"), height = unit(1, "npc"),
      just = "centre", default.units = "npc", 
      gp=gpar(), draw = TRUE, vp = NULL)
\end{verbatim}
\end{Usage}
\begin{Arguments}
\begin{ldescription}
\item[\code{x}] A numeric vector or unit object specifying x-location.
\item[\code{y}] A numeric vector or unit object specifying y-location.
\item[\code{width}] A numeric vector or unit object specifying width.
\item[\code{height}] A numeric vector or unit object specifying height.
\item[\code{just}] The justification of the rectangle about its (x, y)
location.  If two values are given, the first specifies
horizontal justification and the second specifies vertical
justification.
\item[\code{default.units}] A string indicating the default units to use
if \code{x}, \code{y}, \code{width}, or \code{height}
are only given as numeric vectors.
\item[\code{gp}] An object of class \code{gpar}, typically the output
from a call to the function \code{gpar}.  This is basically
a list of graphical parameter settings.
\item[\code{draw}] A logical value indicating whether graphics output
should be produced.
\item[\code{vp}] A Grid viewport object (or NULL).
\end{ldescription}
\end{Arguments}
\begin{Details}\relax
The \code{"grob"} object contains an object of class \code{"rect"}.\end{Details}
\begin{Value}
An object of class \code{"grob"}.\end{Value}
\begin{Author}\relax
Paul Murrell\end{Author}
\begin{SeeAlso}\relax
\link{Grid},
\code{\Link{viewport}}\end{SeeAlso}

